/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/nsqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:10,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:10,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:10,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:45:10,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:45:10,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:45:10,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:45:10,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:45:10,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:45:10,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:45:10,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:45:10,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:45:10,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:10,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:10,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:10,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:10,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:10,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:10,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:10,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:10,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:10,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:10,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:10,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:10,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:10,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:45:10,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:45:10,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:45:10,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:45:10,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:45:10,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:45:10,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:45:10,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:45:10,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:10,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:10,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:10,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:45:11,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:11,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:11,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:11,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:11,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:11,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:11,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:11,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:11,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:11,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:11,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:11,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:11,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:11,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:11,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:11,011 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:11,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:11,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:11,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:11,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:11,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:11,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:11,012 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:11,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:11,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:11,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:11,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:11,536 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:11,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/nsqmf.c [2020-10-23 21:45:11,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a8d18b3/b0881daa4649446f812d27cbfda1b89e/FLAG5784ae7fc [2020-10-23 21:45:12,231 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:12,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqmf.c [2020-10-23 21:45:12,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a8d18b3/b0881daa4649446f812d27cbfda1b89e/FLAG5784ae7fc [2020-10-23 21:45:12,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a8d18b3/b0881daa4649446f812d27cbfda1b89e [2020-10-23 21:45:12,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:12,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:12,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:12,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:12,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:12,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:12" (1/1) ... [2020-10-23 21:45:12,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ed8eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12, skipping insertion in model container [2020-10-23 21:45:12,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:12" (1/1) ... [2020-10-23 21:45:12,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:12,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:12,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:12,794 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:12,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:12,873 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:12,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12 WrapperNode [2020-10-23 21:45:12,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:12,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:12,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:12,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:12,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12" (1/1) ... [2020-10-23 21:45:12,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12" (1/1) ... [2020-10-23 21:45:12,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12" (1/1) ... [2020-10-23 21:45:12,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12" (1/1) ... [2020-10-23 21:45:12,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12" (1/1) ... [2020-10-23 21:45:12,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12" (1/1) ... [2020-10-23 21:45:12,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12" (1/1) ... [2020-10-23 21:45:12,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:12,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:12,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:12,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:12,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:13,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:13,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:13,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:13,067 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:13,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:13,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:13,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:13,742 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:13,742 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 21:45:13,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:13 BoogieIcfgContainer [2020-10-23 21:45:13,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:13,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:13,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:13,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:13,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:12" (1/3) ... [2020-10-23 21:45:13,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c2a92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:13, skipping insertion in model container [2020-10-23 21:45:13,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:12" (2/3) ... [2020-10-23 21:45:13,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c2a92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:13, skipping insertion in model container [2020-10-23 21:45:13,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:13" (3/3) ... [2020-10-23 21:45:13,757 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2020-10-23 21:45:13,770 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:13,776 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:13,789 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:13,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:13,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:13,832 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:13,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:13,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:13,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:13,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:13,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-23 21:45:13,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 21:45:13,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:13,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:13,868 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:13,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:13,879 INFO L82 PathProgramCache]: Analyzing trace with hash 396138475, now seen corresponding path program 1 times [2020-10-23 21:45:13,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:13,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960118431] [2020-10-23 21:45:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:13,995 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:14,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:45:14,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960118431] [2020-10-23 21:45:14,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:14,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:14,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966590151] [2020-10-23 21:45:14,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:14,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:14,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:14,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:14,300 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-10-23 21:45:14,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:14,559 INFO L93 Difference]: Finished difference Result 119 states and 135 transitions. [2020-10-23 21:45:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:14,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-10-23 21:45:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:14,571 INFO L225 Difference]: With dead ends: 119 [2020-10-23 21:45:14,571 INFO L226 Difference]: Without dead ends: 62 [2020-10-23 21:45:14,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-23 21:45:14,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-23 21:45:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-23 21:45:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-10-23 21:45:14,630 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 41 [2020-10-23 21:45:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:14,630 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-10-23 21:45:14,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-10-23 21:45:14,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 21:45:14,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:14,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:14,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:14,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:14,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:14,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1876757282, now seen corresponding path program 1 times [2020-10-23 21:45:14,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:14,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071460081] [2020-10-23 21:45:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:14,638 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:14,671 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-23 21:45:14,672 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:14,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:14,702 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-23 21:45:14,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:14 BoogieIcfgContainer [2020-10-23 21:45:14,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:14,707 INFO L168 Benchmark]: Toolchain (without parser) took 2146.25 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 98.9 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.8 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:14,708 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:14,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.76 ms. Allocated memory is still 155.2 MB. Free memory was 130.5 MB in the beginning and 120.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:14,710 INFO L168 Benchmark]: Boogie Preprocessor took 85.64 ms. Allocated memory is still 155.2 MB. Free memory was 120.7 MB in the beginning and 119.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:14,711 INFO L168 Benchmark]: RCFGBuilder took 783.33 ms. Allocated memory is still 155.2 MB. Free memory was 119.0 MB in the beginning and 99.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:14,712 INFO L168 Benchmark]: TraceAbstraction took 956.40 ms. Allocated memory is still 155.2 MB. Free memory was 99.3 MB in the beginning and 98.9 MB in the end (delta: 457.7 kB). Peak memory consumption was 286.9 kB. Max. memory is 8.0 GB. [2020-10-23 21:45:14,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 307.76 ms. Allocated memory is still 155.2 MB. Free memory was 130.5 MB in the beginning and 120.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.64 ms. Allocated memory is still 155.2 MB. Free memory was 120.7 MB in the beginning and 119.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 783.33 ms. Allocated memory is still 155.2 MB. Free memory was 119.0 MB in the beginning and 99.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 956.40 ms. Allocated memory is still 155.2 MB. Free memory was 99.3 MB in the beginning and 98.9 MB in the end (delta: 457.7 kB). Peak memory consumption was 286.9 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 1 [L32] a[0] = 1 [L34] i=1 [L34] COND FALSE !(i